Create an extension that will implement an action API module for managing the Reading Lists of a user.
The extension will store and retrieve the Reading List data within MariaDB.
See subtasks for Database implementation and API implementation
References:
T164990 https://docs.google.com/document/d/1dZcpGWi8cuuMmXduANYt37pZq6B8Z66_x9dMBNADTFU/edit#heading=h.oywa0f8g77yx